| Month | NOAA Normals (in) | PRISM Normals (in) | Diff (in) |
|---|---|---|---|
| Jan | 0.40 | 0.42 | -0.02 |
| Feb | 0.48 | 0.52 | -0.04 |
| Mar | 0.93 | 1.00 | -0.07 |
| Apr | 1.99 | 2.10 | -0.11 |
| May | 2.76 | 3.00 | -0.24 |
| Jun | 3.01 | 3.08 | -0.07 |
| Jul | 3.30 | 3.18 | 0.12 |
| Aug | 2.89 | 2.89 | 0.00 |
| Sep | 1.46 | 1.46 | 0.00 |
| Oct | 1.48 | 1.54 | -0.06 |
| Nov | 0.68 | 0.70 | -0.02 |
| Dec | 0.50 | 0.52 | -0.02 |
19.88 | 20.41 | -0.53 |